W3C home > Mailing lists > Public > public-webappsec@w3.org > January 2015

Re: Proposal: A pinning mechanism for CSP?

From: Jim Manico <jim.manico@owasp.org>
Date: Fri, 23 Jan 2015 09:25:57 -0800
Message-ID: <-9199434250379210048@unknownmsgid>
To: Mike West <mkwst@google.com>
Cc: Frederik Braun <fbraun@mozilla.com>, "public-webappsec@w3.org" <public-webappsec@w3.org>, yan zhu <yan@mit.edu>, Chris Palmer <palmer@google.com>, Ryan Sleevi <sleevi@google.com>, Brad Hill <hillbrad@gmail.com>, Dan Veditz <dveditz@mozilla.com>
Ok that's fair.  Yea, to be honest I can even see CSP headers in a manifest
for some sites. Configuring all this in one place is compelling. So I hope
we can do a manifest OR per-page headers, with per-page headers taking

Rock on!
Jim Manico
(808) 652-3805

On Jan 23, 2015, at 9:18 AM, Mike West <mkwst@google.com> wrote:

On Fri, Jan 23, 2015 at 6:11 PM, Jim Manico <jim.manico@owasp.org> wrote:

> We need to apply these headers differently per-page at times, so I say
> no to a manifest-like structure.

I think Freddy's proposal was related to the host-wide pinned items, not
the per-page CSP header.

Those pins could certainly fit into a manifest. Maybe that's even a good

The reason we've traditionally resisted going that route is that it would
involve either reducing the security of the initial request, or causing a
synchronous request to block loading a page. Neither seems like an awesome

Mike West <mkwst@google.com>, @mikewest

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Received on Friday, 23 January 2015 17:26:26 UTC

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